METHOD OF ELECTROPLATING COPPER COATINGS Russian patent published in 2016 - IPC C25D5/18 

Abstract RU 2586370 C1

FIELD: electroplating.

SUBSTANCE: invention relates to electroplating and can be used for application of copper coatings on shaped article. Method includes electric deposition of copper coating from electrolyte containing copper salt and sulphuric acid, using reverse current, electrolysis is carried out at current density in the cathode and anode pulses 200-1,000 A/m2, current pulsation frequency from 0.05 to 1 Hz, duration of cathode and anode pulses from 2:1 to 5:1, the electrolyte also contains hydrogen peroxide content of which by means of a Platinum indicator electrode potential is controlled within the range of + 0.7 to + 0.8 V relative to standard hydrogen electrode.

EFFECT: technical result consists in increased uniformity of coating on surface of shaped articles without excessive roughness.

2 cl, 3 ex

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RU 2 586 370 C1

Authors

Nekrasova Natalya Evgenevna

Kruglikov Sergej Sergeevich

Vinokurov Evgenij Gennadevich

Pomogaev Vasilij Mikhajlovich

Dates

2016-06-10Published

2014-12-02Filed